Coin wrapping device

Abstract

A self-limiting crimping hook device for coin wrapping machines which as an integral part of the crimping hook assembly, provides a fixed and minimal clearance between the foot of the crimping hook and the end coin of the coin stack, through which the tab of a quick opening pull strip can glide without damage during the rolling of the edge of the wrapping material in the crimping operation.

What is claimed is: 
     
       1. A self-limiting device for coin wrapping machines comprising in combination a crimping hook with a foot adapted to extend over the upper surface an end coin of a stack of coins to be wrapped adjacent the periphery of the stack of coins and a limiting hook extending over and beyond said crimping hook and including a foot portion extending radially inwardly from said crimping hook to the proximity of the center of the end coin and axially closer to the end coin than the foot of said crimping hook whereby a clearance is provided between the foot of said crimping hook and the end coin when the foot portion of said limiting hook is resting against the end coin so that a tab of a pull strip attached to the coin wrapper may glide through said clearance between the foot of said crimping hook and the end coin without interference or damage, said crimping hook and said limiting hook having integral support means and further being of such dimensions so as to be serviceable in wrapping stacks of various sizes or denominations of coins. 
     
     
       2. The invention as set forth in claim 1 further characterized by the fact that the limit hook can be formed of 4 mm diameter, hardened steel rod with a horizontal distance from the crimping hook such as to allow the foot of the limit hook to coincide approximately with the center of a coin of 20 mm in diameter, and the height of the hook depending upon the length of the tab and clearance within the machine to be an integral part of a mounting plate which can be fastened to the mounting bracket of the crimping hook used on existing machines. 
     
     
       3. The invention as set forth in claims 1 or 2 further characterized by the fact that a minimal clearance which is slightly greater than the thickness of the tab of the pull strip, is set as the difference in the amount the foot of the limiting hook extends below the foot of the crimping hook. 
     
     
       4. The invention as set forth in claims 1 or 2 further characterized by the fact that the limit hook may be fabricated as an integral part of the crimping hook's mounting bracket for new machines or for replacement parts. 
     
     
       5. The invention as set forth in claims 1 or 2 further characterized by the fact that the foot of the limit hook is ground slightly convex.